docs: def real_time_sequencing(self, availability, oauth, event, target_calendars=()):
          """Generates an real time sequencing link to start the OAuth process with
          an event to be automatically upserted
  
          :param dict availability:  - A dict describing the availability details for the event:
  
              :sequence: An Array of dics representing sequences to find availability for
                         each sequence can contain.
                  :sequence_id - A string identifying this step in the sequence.
                  :ordinal - An Integer defining the order of this step in the sequence.
                  :participants      - A dict stating who is required for the availability
                                   call
                  :required_duration - A dict stating the length of time the event will
                                       last for
                  :event - A dict describing the event
                  :available_periods - A dict stating the available periods for the step
              :available_periods - A dict stating the available periods for the sequence
          :param dict oauth:   - A dict describing the OAuth flow required:
              :scope             - A String representing the scopes to ask for
                                   within the OAuth flow
              :redirect_uri      - A String containing a url to redirect the
                                   user to after completing the OAuth flow.
              :scope             - A String representing additional state to
                                   be passed within the OAuth flow.
          :param dict event:     - A dict describing the event
          :param list target_calendars: - An list of dics stating into which calendars
                                          to insert the created event
          See http://www.cronofy.com/developers/api#upsert-event for reference.
          """
          args = {
              'oauth': oauth,
              'event': event,
              'target_calendars': target_calendars
          }
  
          if availability:
              options = {}
              options['sequence'] = self.map_availability_sequence(availability.get('sequence', None))
  
              if availability.get('available_periods', None):
                  self.translate_available_periods(availability['available_periods'])
                  options['available_periods'] = availability['available_periods']
  
          args['availability'] = options
  
          return self.request_handler.post(endpoint='real_time_sequencing', data=args, use_api_key=True).json()